Communication method, equipment and system in unicast environment

A communication method and unicast technology, applied in the field of communication, can solve problems such as only supporting unicast environment and limited network, and achieve the effect of saving resources and system overhead

Inactive Publication Date: 2010-07-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing IEEE1588v2 protocols all describe clock synchronization in a multicast environment, and in the existing transmission network, especially on the Residential Access Network (Residential Access Network, RAN for short) side as the

Method used

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  • Communication method, equipment and system in unicast environment
  • Communication method, equipment and system in unicast environment
  • Communication method, equipment and system in unicast environment

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0044] This embodiment provides a communication method in a unicast environment, such as figure 1 shown, including the following steps:

[0045] Step 101, after the slave device and at least one master device pass the unicast negotiation of the notification message, unicast a keep alive message to the at least one master device.

[0046] Specifically, the slave device may periodically actively unicast a keep-alive message to the at least one master device; or, after receiving a status detection message sent by the master device, unicast the master device to The keep-alive message corresponding to the status detection message is sent by broadcast, and the keep-alive message may be periodically unicast sent to the master device.

[0047] Step 102, the master device determines the status validity of the slave device sending the keep-alive message according to the received keep-alive message from the slave device.

[0048] It should be noted that the validity of the status of th...

Embodiment 2

[0069] In the first embodiment of the above method, the unicast negotiation process of the notification message between the master device and the slave device is described, but in practical applications, there are also constraints on the timing or coherence of the negotiation between various unicast negotiation messages relation. These unicast negotiation packets include: notification (Announce) packet, synchronization (Sync) packet, point-to-point (Point to Point, referred to as: P2P) delay response packet (Delay_Resp) packet and end-to-end (End to End, Abbreviation: E2E) delayed response message (Pdelay_Resp) message, four types of messages in total. Among them, the notification message is used to maintain the clock link; the synchronization message contains a time stamp for clock synchronization; the point-to-point delay response message and the end-to-end delay response message are in the P2P mode and the E2E mode respectively When performing time synchronization, it is u...

Embodiment 3

[0092] This embodiment provides another communication method in a unicast environment, such as Figure 7 As shown, taking the unicast negotiation of the notification message as an example, the unicast negotiation between the slave device and the master device may specifically include the following steps:

[0093] In step 301, the slave device unicasts a notification request (Request) message to the master device in the unicast master device information maintained by itself.

[0094] Step 302: After receiving the notification request message, the master device returns a notification grant (Grant) message carrying authorization information to the slave device according to the unicast slave device information maintained by the master device itself.

[0095] For example, judging whether the slave device is included in the unicast slave device information, if the slave device is included in the unicast slave device information, the authorization information indicates that authorizati...

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Abstract

The embodiment of the invention relates to a communication method, master equipment, slave equipment and a unicast communication system in a unicast environment, wherein the method comprises the following steps of: receiving a keep-alive message sent by the slave equipment after the master equipment and at least one slave equipment pass through a unicaste negotiation of an informing message; determining the state efficiency of the slave equipment for transmitting the keep-alive message according to the keep-alive message; and sending the inform message to slave equipment of at least one slave equipment, the state of which is effective, in an unicast way according to the state effective information corresponding to the slave equipment and a unicast negotiation result of the inform message. With the embodiment of the invention, the master equipment can perceive whether the state of the slave equipment is effective or not and avoid the problem that the slave equipment still sends the inform message after off line, thereby saving resources and system expenditure.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a communication method in a unicast environment, a master device, a slave device and a unicast communication system. Background technique [0002] The Precision Time Protocol (PTP) refers to the Institute of Electrical and Electronics Engineers (IEEE) 1588v2 standard, which is a clock synchronization standard for wireless products and base stations Clock synchronization on the web. [0003] However, the existing IEEE1588v2 protocols all describe clock synchronization in a multicast environment, and in the existing transmission network, especially on the Residential Access Network (Residential Access Network, RAN for short) side as the wireless transmission bearer network, The networks that really support the multicast environment are limited, and most of them only support the unicast environment. Therefore, the industry urgently needs a communication solution in the unicas...

Claims

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Application Information

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IPC IPC(8): H04L29/08H04L12/56H04L12/18H04L1/16
Inventor 王承洋姚成亮
Owner HUAWEI TECH CO LTD
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